Home / 21,548.76-29,737.32-12,117.36

Finding the Fourth Proportional to 21,548.76, 29,737.32 and 12,117.36

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Solution

The fourth proportional to 21,548.76, 29,737.32 and 12,117.36 is: 16,721.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,548.76 : 29,737.32 = 12,117.36 : x
  2. Step 2: Convert to fraction form
    21,548.76/29,737.32 = 12,117.36/x
  3. Step 3: Cross multiply
    21,548.76x = 29,737.32 × 12,117.36
  4. Step 4: Simplify right side
    21,548.76x = 360,337,811.88
  5. Step 5: Solve for x
    x = 360,337,811.88/21,548.76
  6. Step 6: Final answer
    x = 16,721.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.